import { equivalent } from "spatial-reference-system";

const web_mercator_esri_wkt = `PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.017453292519943295]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0]]`;
const web_mercator_ogc_wkt = `PROJCS["WGS 84 / Pseudo-Mercator",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]],PROJECTION["Mercator_1SP"],PARAMETER["central_meridian",0],PARAMETER["scale_factor",1],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["X",EAST],AXIS["Y",NORTH],EXTENSION["PROJ4","+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext  +no_defs"],AUTHORITY["EPSG","3857"]]`;
equivalent(web_mercator_esri_wkt, web_mercator_ogc_wkt);
// true

import { SRS } from "spatial-reference-system";

const srs = new SRS(`PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",...`);
console.log(srs.code);
// 3857

import { SRS } from "spatial-reference-system";

const srs = new SRS(`PROJCS["NAD83 / UTM zone 16N",GEOGCS["NAD83",...`);
console.log(srs.proj4);
// "+proj=utm +zone=16 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs"

import { SRS } from "spatial-reference-system";

const srs = new SRS(`PROJCS["NAD83 / UTM zone 16N",GEOGCS["NAD83",...`);
console.log(srs.prj);
// "PROJCS["NAD83 / UTM zone 16N",GEOGCS["NAD83",..."